The working speed of the screw conveyor is actually twice or more than the calculated critical speed. Generally, it should be determined according to the stable operation of a certain material. Selecting a lower speed can reduce the wear of the material on the screw blades and the casing, so as to improve the life of the screw conveyor. Screw conveyors are mainly used in the coal industry, mining industry, chemical industry, construction industry, food and grain industry, metallurgical industry, etc. The following specific analysis:
1. Coal industry: the types of materials include pulverized coal, coal nuggets, cinder, coke, coal, etc.
2. Mining industry: the types of materials are important ore, limestone, etc.
3. Chemical industry: The types of materials are mainly chemical elements, raw materials, clinkers, etc.
4. Construction industry: the types of materials include cement, cement clinker, etc.
5. Food industry: the types of materials are mainly flour, corn, wheat, grains, etc.
6. Metallurgical industry: the types of materials are mainly iron, silver, various metals, etc.